US Bridges

Dismal Hollow RD over Manassas Run

Good

Warren County, Virginia · 0.20 to 55 - 0.70 to 651 · Structure no. 000000000018813

Built
1932
93 years old, rebuilt 1983
Condition
Good
inspected September 2023
Type
Slab
Concrete
Length
33 ft
1 main span
Daily traffic
3,007
2021 count
Owner
State
State Highway Agency

About this bridge

Dismal Hollow RD over Manassas Run is a concrete slab carrying Dismal Hollow RD over Manassas Run in Warren County, Virginia. It was built in 1932 and reconstructed in 1983, so it is 93 years old, older than the Virginia average of 50.7 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,007 vehicles a day, roughly 1% of them trucks, projected to reach 4,435 by 2045. The structure is 33 ft (10.1 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesDismal Hollow RD
CrossesManassas Run
Location0.20 to 55 - 0.70 to 651
RouteCounty Highway 647
Coordinates38.91476, -78.10302
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating96 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length33 ft (10.1 m)
Longest span22 ft (6.7 m)
Deck width28 ft (8.6 m)
Roadway width25 ft (7.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,007 (2021)
Projected traffic4,435 by 2045
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$251 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Dismal Hollow RD over Manassas Run built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1983.

What condition is Dismal Hollow RD over Manassas Run in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Dismal Hollow RD over Manassas Run carry?

About 3,007 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Dismal Hollow RD over Manassas Run?

The structure is 33 ft (10.1 m) long with a longest span of 22 ft (6.7 m) and a deck 28 ft wide.

Who owns Dismal Hollow RD over Manassas Run?

It is owned by the State Highway Agency.